Large Scale Opto Kill for Magneto Engines RCEXL

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Large Scale Opto Kill for Magneto Engines RCEXL

Market Price: $39.95
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Availability No items available
Weight 0.19 lbs
SKU RCEXL-Opto-kill-magneto
Manufacturer RCEXL


Large Scale Opto Isolated Kill switch for Magneto type ignitions (Zenoah) - With low voltage safety cutoff.

Works on any gasoline engine air, land or sea with a magneto drive ignition (not compatible with CDI driven ignition systems)--perfect solution for fields that require an optical kill switch but you have an engine that has magneto ignition like Zenoah, 

Connects to manual kill switch wiring or magneto kill wire.

• Remote LED to indicate if the ignition is live
• Fiber optically coupled to eliminate  interference
• Li-Po/Li-Ion/LiFe/Ni-Cd/Ni-MH compatible
• Input range from 3V, 3 amps up to 20V, 16 amps
• Surface mount technology
• High-quality wiring with universal servo connectors
• Only 0.3 oz/8 g
• Manually shut off engine from assigned button on transmitter
• Automatically shuts down power to the ignition on loss of signal or low voltage

*** Not compatible with the Spektrum SRS4200, SRS4201 and SRS4210 receivers.

Made by RCEXL China.

Installation Instructions

1. Assign the channel used to operate the Safety Kill Switch to a button/switch on your transmitter*.
2. Set the channel type to a 2-position auxiliary.
3. When the LED on the Safety Kill Switch is solid red, the engine can be started.
4. To set the failsafe**, bind the receiver to the transmitter with the Safety Kill Switch in the off position. This ensures that if the receiver looses power or signal the Safety Kill Switch will turn the engine off

Low Voltage Cutoff

1. Arrange jumpers on the side of the Safety Kill Switch to select the voltage cutoff.
2. If the voltage gets below the selected voltage the Safety Kill Switch will turn the engine off.

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DLE Muffler Extensions



DLE Muffler Extensions


Choose from 5 sizes!

These extensions fit over the exhaust exits on your DLE muffler. Below are some size dimensions and the muffler that each will fit. It is still a good idea to measure the exits on your muffler.

FORMAT: LxW (width is inside diameter)

A: 63x15 mm : DLE 20RA

B: 64x17 mm : DLE 35RA/40

C: 78x20 mm : DLE 55RA

D: 96x25 mm : DLE 55, DLE 111, DLE 120

E: 121x31 mm : DLE 61, DLE 85

*Sold individually- if you have a twin engine, you will need two extensions

*Each Hose extension comes with a metal clamp to tightly secure it to the muffler.




LiFe Batteries 3S

Our LiFe Batteries (also known as A123 Batteries) have huge advantages over most other options.

1) LiFe Batteries are lightweight - as light as Lipos
2) LiFes are safer than Lipos (do not combust easily like lipos)
3) LiFe Batteries supply a constant voltage (They stay right near 6volts from start to finish ensuring consistent flights)
4) Run Life batteries to your servos and ignition without regulators (For extra caution some people run a regulator to their ignition still)
5)Life's have a high Charging Capacity. Charge up to 5amps, allowing you to charge them up in MINUTES!

The 2100 or 3000 Mah can be used as a SINGLE battery system for 30cc planes. (we recommend spliting the lead and put 2 JR leads on, to run to the receiver and the other to ignition). You can also run a single 3000 Life Battery on a 50cc Plane.

The 1450mah LiFE Battery is a great option for those that want a separate battery for ignition and receiver (if you are running FM or hesitant to use a single battery system). The 1450mah Life is a great battery for the ignition for either a 30cc or 50cc sized plane

We recommend the following:
On the MXSR (2) 2100mah, or 1 3000mah placed on the mount box or front of the plane. It is a bigger plane and will do well with the extra voltage and weight.
Other 30cc planes - (1) 1450mah for ignition, (1) 2100mah for receiver or for a lighter set up
(1) 2100mah for both (split the wire to 2 leads) OR (2) 1450mah (one for ignition one for receiver).

50cc sized planes (1) 1450mah LiFe battery for ignition and (1) 3000mah LiFe battery for receiver or, for a lighter set up
(1) 1450mah for ignition, and (1) 2100 for receiver OR (1) 3000mah LiFe for both receiver and ignition

WATCH THIS VIDEO: Explains whether to use a regulator or not, 2 batteries or 1 for your plane, Redundancy and more.


  • Type: LiFe Battery (same technology as A123)
  • Weight:
    • 3S 2100mah - 6.2oz
    • 3S 3100mah Life - 9oz
  • Size:
    • 3S 2100mah- 95mm x 29mm x 30mm
    • 3S 3000mah- 130mm x 42mm x 20mm
  • Voltage:
    • 3S 2100- 9.9 Volts
    • 3S 3000- 9.9 Volts
  • Discharge rate:
    • 20c maximum continuous
    • 40c maximum burst
  • 14gauge Wire
  • Connectors: XT-60 Connector
  • Balancing lead

These batteries have the XT-60 connector.



  • 3S 2100mah - $33.99
  • 3S 3000mah - $49.99

****Batteries must ship surface mail due to hazmat restrictions and have been taking longer to reach destination****Express and Priority mail are not an option for surface ground mail.



Metal Clevis With Hollow Shaft Φ3+M3×L33mm (10 pcs)

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